If your doing a total refill. Then, If I recall correctly is 4 cans of 134A.
Look for the sticker under the hood! It will tell you the refrigerant and the ounces.
Theses figures are for a 1998 to 2002 model. 1.5 lbs or .68kg. Basically two standard 12oz cans. If system has been opened you need to add oil.
Buy 3 cans. Uses 2 1/2.
2-3 cans- about $30 total
A 2002 Mitsubishi Lancer requires 26.85 ounces for a complete recharge. The normal freon can has 12 ounces so it would take just a little more than two cans.
It takes 2 large cans and possibly a small one.
4 cans of spaghetti sauce will be needed
Cans of paint needed: 2200/400 = 5.5 therefore 6 cans are needed
4 cans of freon max.
It does use R134a. If it's completely out, you'll probably need 2 cans minimum.
The simple way is to remove the R12 and install R134A. by a kit with that will have a hose, R134A with oil. The new oil may plug your leaks. or go to Mexico and cross the border and buy R12 in 12 oz cans The border guards may take your R12 cans when you come into USA. or Drive your car into Mexico and have them fill your system with R12.
The stock system will be R12. It is very costly to recharge. If it is stock get a recharge kit. Kits usually contain everything needed to change to R134A refrigerent. If it is already changed then all you need is a recharge hose for R134A and of course some cans of r143a. You will be able to tell the difference in the two systems by looking at the A/C lines where the coolent is added. If they are R12 systems they will have threads if they are R134A systems they will have what are known as quick connects or simply there will not be any threds.